Experiencing Dizziness, Heavy Eyes, Blurred Vision, Cramping On Lower Abdomen, Sore Breasts. Tubal Pregnancy ?

For the last few days i have been experiencing dizziness, heavy eyes, blurred vision, pain on most parts of my body, cramping on and off lower left abdomen, sore breasts/nipples. Feeling very weak, like my head is heavy.and Nausea also. I haven't taken any medication to cause these symptoms and I'm 9 days late for my period which is not normal for me I did have sex 3 times around ovulation day with no protection I took a test which was negative. I don't know what's going on but I do know something is wrong I know my body and its not feeling normal. My question is, is it serious enough to seek medical attention? Do you think it could be a tubal pregnancy or miscarriage? I'm desperate for answers! Thanks in advance