Weird abdominal pain

Help!! Hubby and I have been TTC for 10 months and haven’t had any luck so far. My doctor suggested that we stop tracking ovulation and just stick to baby dancing every second day throughout the whole cycle as my cycles are quite all over the place. Anyway so I think I’m around 8DPO (based on what Glow suggests and previous cycles). Last night I woke up in the middle of the night with extremely sharp pain in my lower abdomen. The pain was so bad I could hardly walk and had to curl up in a ball. I was sweating and felt extremely faint. I didn’t have any diarrhea or vomiting so was very confused as to what was going on. I lied in bed for a while and took some panadol and then the pain went away about half an hour later, then fell back to sleep. This morning I am feeling loads better but have small cramps (similar to period pain) on my right side of my abdomen and around to my lower back. I’m really confused, I’ve never had period pain like that before…. Could it be implantation or something else?