I have regular periods.gt my perio on 11/01/2016.rubbing happened between me and my partner on 15/01/2016.there was no discharge of semen at all.had irregular spotting and den heavy bleeding on 27th.consulted gynae , gave me tablets doxypal and pause mf among other infection tablets and assured me of no pregnancy. However I have read that pregnancy is late to detect correctly. I am a thyroid patient too.should I go for an ultrasound on my own intuition??? Would the ultrasound be to early to detect ???