So I know I ovulated last Saturday and we did it then and then again on Tuesday (he had to travel so we weren't able to get it on all week like we wanted to) so yesterday I noticed some cramping on my right side and I've been having headaches and itchy nipples. Took a hpt and got a negative result last night. Af is due 9/27/16 so I know I still have time. Could it be or am I being over ambitious?