still charting

Well, I'm still working on charting my cycle etc but don't know how far I'm getting. I have a hard time temping because I sleep during the day but have been trying. The last two days though haven't worked as the one day I layed there in bed half awake for a good 10 minutes before remembering to take my temp and then today I'm coming down with a cold (crap!) and had slept with my mouth open and my temp was only 96.9. I may have to switch to temping vaginally. I'm on CD 14 and I've been doing the opk's for the last 3 days at least 3 times per day and as of yet, I still haven't gotten a positive. My CM this morning was egg white cm. I don't know if the problem though is that I'm using the dollar tree cheapies to test. I hate to spend a bunch of money for just charting on opk's but I don't know if the problems are with the test, or with me. I hope it's not a problem with me. I don't know for sure what time of the day to test either so I may just be missing it I suppose. I work nights and even on my days off, tend to stick to the same schedule of sleeping during the day. So, I can't figure out if I should still stick to the time that is recommended (during the afternoon) or if I should switch and test during MY afternoon which is like 2 am. I've been testing when I first get up at around 4pm, and then at say 8am. I haven't tried testing at 2am yet as I have worked the last 3 nights and I haven't figured out the logistics of testing at work as the tests I've been using aren't the pee on a stick variety but instead, pee in a cup and the drop onto test and wait up to 10 minutes. So, for next month, I definitely need some different opks. On the health conciousness note, I haven't checked my BP in a couple of days but it had been running ok. However it might be high right now. I have been taking a diuretic for the last couple of months in addition to my BP meds just because my feet sometimes swell some. Well, I think the diuretic dries up my CM and makes it difficult to differentiate betweeen the different types of CM. So, this month I decided to skip the diuretic for a few days so I could get a better idea of my CM. Then I had a hell night at work where I had 4 babies, one of whom was very difficult to care for and had like no time to drink water like usual. Now my ankles are HUGE. Bigger than they have ever been and that has me a little bit freaked out. So, tonight I'm off work and my goal is to sit on my hiney and try to get rid of the swelling in my feet. Oh, that and go grocery shopping since I now have a fridge and need some food in it.