So my period was July 22nd-27th. My boyfriend and I have been having sex everyday and then go to every other day. My "expected" ovulating was between the 4-7 of August. We had intercourse almost every day on those days. I've been experiencing moderate backpain, headaches, and nausea a little here and there. I took 2 pregnancy tests the 9th of August and they were negative. Should I wait until im a day or so late to take another test? I should be expecting my period in roughly 7-9 days.