I'm 2 days late ughh

Me and my man have been trying to conceive for 3 months now and at first periods were very irregular..like ever two weeks or sooner. Dr prescribed bc to help regulate and it did last mknth..had a regular period and now 3 weeks and 2 days later I'm late.. very stressed because I've had mild cramps like I'm gonna start and usually when I get those I start quickly..having some groin pains..not bad at all..just k ow somethings not right..should I wait to test..could I be pregnant? Please help! I need baby dust! :)