help please. nobody really ever comments...

So I was supposed to get my period on cycle day 26 it is now cycle day 30. I don't miss my periods if anything it's always a day off but not 4. Glow says I ovulated on Jan 20th but I didn't track or anything because my husband was out on a business trip and I didn't expect him to be back but the 20th well he was back and we had sex on the 21st... I have also been drinking red raspberry leaf tea (1cup a day) for all January. Could this have thrown off my period or is it really a possibility I could be pregnant? I'm scared to test its been three years of negative tests so I'm nervous to test. I also had sex the other night and as soon as I got off of him my lower abdomen started to cramp which has never happened before...