I think I’m pregnant ?

Hey ladies. My period was June 9th-14th. My ovulation was the 24th-1st… I bled a tiny bit (pinkish) on June 6th or 7th and I haven’t bled since. My period is supposed to come on either today or I missed it according to my calenders. I have been comstipated & having diarrhea and my boobs have been super sore and the smell of cigarettes is making me super nauseous. Also my uterus has been feeling a little tight and crampy. Any of you ladies experienced this ?