You have a well going dry. Time to drill for another well!.
1) The water level in your well could be low. You may have to drill it deeper or dig a new well. A couple of good rains migh solve your problem.
2) Check the holding tank on your well pump. They can begin to collect sediment and fill up.
There are times when you need AIR in the pump to push and keep a steady flow of water. A lot of pumps have a place to add air. If not, let the water out of the pump and the AIR will automatically go in and up. Then replace the screw or cover.
ANS 3 - I've been working on wells for almost 15 years and NEVER found any well pump that had or needed air in it !
You do have a well going dry , or at least not refilling to original static water level, In many cases this can be resolved by lowering the pump. Smart drillers never sit the pump on the bottom. It's almost always somewhere between bottom and static.
Earthquakes can trigger (submarine)landslides and debris flows which can act to cause the deposition of sediment, however they are far from the only cause of sediment deposition.
Sudden/Increased water flow will cause the river sediment to become disturbed and then flow down stream.
Piles of sediment
Yes it can influence your periods
Yes, methadone and other narcotics can cause you to miss periods.
Yes it may cause missed periods and sometimes painful periods
compaction because as the sediment piles up it is pushed together wich is pressure and compaction
As more sediment is added, it is compressed and hardens into rock layers.