Yeah, I had a Lap/HSG in 2008, that was when my mild Endo was discovered.
Just get the heavy bleeding at the beginning of a new cycle. Typically, the first 1-2 days are light, then 1-2 days of really heavy bleeding with clots, then 2-3 days of medium flow that gets gradually lighter. The total number of days when I bleed is usually 5, but can be as many as 6 or 7, depending on how long the previous cycle took.
The last cycle was a really long one, bleeding started on 14th of Jan, then I didn't ovulate until approximately 14th of March, so by the time the new cycle started on 1st of April it was a total cycle length of about 10 weeks which is highly unusual for me, typically my cycles are anywhere between 4 and 6 weeks long. So I'm guessing that the 10 week cycle explains why this cycle is much heavier than usual.
I will try to get a Dr appointment on Wednesday, I will definitely ask about the Mefenamic/tranexamic acid and also other options that would be suitable. I just have to be really careful with hormone contraception given my history of stroke, that is why I can't take any BCP.
Edited to add: I'm waiting to start acupuncture & Chinese herbs again (lack of money has been the issue until now LOL) as these work beautifully for me and they make my menstrual bleeds much less clotted and virtually pain-free

The Fertility Focus Telesummit 2011
http://babyhopesblog.blogspot.com
dx with PCOS March '04
ttc since Sept '05
2 m/c '06 (5.5w & 6w) conceived w Clomid
Surprise BFP April '08, m/c May '08 (6.5w)
SA for DH, mild MFI
DNA testing for both of us, all okay
Lap & HSG May '08 mild endo found
Surprise BFP Aug '08, m/c Sept '08 (boy 10.5w) caused by retroplacental haematoma